Respiratory viruses usually enter the body through inhaled droplets, but PCANS creates a gel cushion inside the nasal passages, effectively trapping any incoming viruses and bacteria. In laboratory tests on mice, the spray was shown to be effective against a mouse-adapted H1N1 influenza strain, protecting rodents even when exposed to doses up to 25 times lethal levels. Virus levels in the lungs of treated mice were reduced by more than 99.99% compared to untreated controls, and the effects of the spray lasted eight hours.
Although PCANS has not yet been tested in humans, it has proven effective in a 3D printed model of the human nasal cavity, trapping droplets containing twice as many microbes as normal mucus.
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Source: Ferra
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